Bizarre Parosteal Osteochondromatous Proliferation of the Metatarsal: A Pediatric Case Report and Archival Review
published online 16 September 2009.
Bizarre parosteal osteochondromatous proliferations (BPOP), also known as Nora's lesions, are rare tumors occurring most commonly in the hands and feet. They are benign and rarely exhibit radiological evidence of cortical invasion. We report a case of BPOP showing atypical magnetic resonance imaging features that are inconsistent with BPOP and having a novel chromosomal aberration. We also review the BPOP cases in our regional benign bone tumor database. Level of Clinical Evidence: 4
1Foundation Doctor, Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Edinburgh, UK
2Orthopaedic Specialist Registrar, Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Edinburgh, UK
3Consultant Radiologist, Department of Radiology, Royal Hospital for Sick Children, Edinburgh, UK
4Professor of Osteoarticular Pathology and Consultant Histopathologist, Department of Pathology, Royal Infirmary of Edinburgh, Edinburgh, UK
5Consultant Orthopedic Surgeon, Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Edinburgh, UK
6Senior Lecturer and Honorary Consultant Orthopaedic Surgeon, Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Edinburgh, UK
Address correspondence to: Kar Hao Teoh, MBChB, Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LF, UK.
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